Question

單項(xiàng)式-

3xy2

10

的系數(shù)是

 

．多項(xiàng)式3x³y-2xy+2的次數(shù)是

 

．

Answer 1

分析：單項(xiàng)式的系數(shù)是單項(xiàng)式中的數(shù)字因數(shù)．多項(xiàng)式的次數(shù)是多項(xiàng)式中最高次項(xiàng)的次數(shù)．

解答：解：單項(xiàng)式的系數(shù)為：-

3

10

，將多項(xiàng)式分解成三個(gè)單項(xiàng)式，其中第一項(xiàng)的次數(shù)最高為4，則此多項(xiàng)式的次數(shù)即為4．

點(diǎn)評：本題考點(diǎn)為單項(xiàng)式系數(shù)和多項(xiàng)式次數(shù)的求解．根據(jù)單項(xiàng)式和多項(xiàng)式的性質(zhì)進(jìn)行求解．